Insider crackdown: Why Steven Cohen sought

July 8, 2013, 2:45 AM|Federal prosecutors are in the middle of the biggest insider trading crackdown over. But despite years of work and millions of dollars spent, there is one man they still want, and can't get: Steven Cohen. Charles Gasparino takes readers inside that quest to charge Cohen in his new book "Circle of Friends" and discusses that effort with the "CBS This Morning" co-hosts.